So the argument from our strata manager over a lengthy period of time about privacy seems to be total baloney!
I believe the vast majority of strata schemes are not covered by the Privacy Act. However, the strata Act says that contact details must be provided on the strata roll. The strata roll is part of the documentation owned by the Owners Corp and therefore it must be made available to the strata committee and, indeed, any owner who arranges to go the strata manager’s office and see and copy it.
I wouldn’t concern yourself unduly with why your strata manager is being obstructive in this regard. They are either doing their job properly, as per the law, or they aren’t. And if the latter is demonstrably and provably the case, make a complaint to Fair Trading (which you can do as an individual owner) then get rid of them.